Need for speed world with banglalion wimax

Is there any1 who's able 2 play nfsworld clearly with banglalion wimax?? M using 1mbps, but facing critical problems while playing nfsworld. I can see others online players but not all, specially when i join a group then m able 2 see others on group and can do chat n voice chat clearly. But cant play multiplayer as well. It says"neterror_connect_peer_timeout" all the time. I allowed all the ports related nfsworld by isp, and also add an exception on firewall. Can any1 give any perfect solution pls??